Volume 109, Issue 11 pp. 2199-2211
RESEARCH ARTICLE

Effect of a plasma synthesized polypyrrole coverage on polylactic acid/hydroxyapatite scaffolds for bone tissue engineering

María G. Flores-Sánchez

Corresponding Author

María G. Flores-Sánchez

Faculty of Engineering, Department of Investigation, La Salle University México, México City, Mexico

Correspondence

María G. Flores-Sánchez, Faculty of Engineering, Department of Investigation, La Salle University México, Av. Benjamín Franklin 45, Cuauhtémoc, CP 06140, México City, México.

Email: [email protected]

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Nancy C. Islas-Arteaga

Nancy C. Islas-Arteaga

Department of Electric Engineering, Universidad Autónoma Metropolitana, México City, Mexico

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Atlántida M. Raya-Rivera

Atlántida M. Raya-Rivera

Department of Tissue Engineering, Child Hospital of México Federico Gómez, México City, Mexico

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Diego R. Esquiliano-Rendon

Diego R. Esquiliano-Rendon

Department of Tissue Engineering, Child Hospital of México Federico Gómez, México City, Mexico

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Juan Morales-Corona

Juan Morales-Corona

Department of Physics, Universidad Autónoma Metropolitana, México City, Mexico

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Omar E. Uribe-Juarez

Omar E. Uribe-Juarez

Department of Electric Engineering, Universidad Autónoma Metropolitana, México City, Mexico

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Flor I. Vivar-Velázquez

Flor I. Vivar-Velázquez

Department of Physics, Universidad Autónoma Metropolitana, México City, Mexico

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Greta P. Ortiz-Vázquez

Greta P. Ortiz-Vázquez

Department of Biomedical Engineering, New Sanatorium Durango, México City, Mexico

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Roberto Olayo

Roberto Olayo

Department of Physics, Universidad Autónoma Metropolitana, México City, Mexico

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First published: 26 April 2021
Citations: 5

Funding information: Consejo Nacional de Ciencia y Tecnología, Grant/Award Number: CB16RF_287927; Universidad La Salle México, Grant/Award Number: EC388-IMC 13/18

Abstract

Composite biomaterials are solids that contain two or more different materials, combining the properties of their components to restore or improve the function of tissues. In this study, we report the generation of electrospun matrices with osteoconductive properties and porosity using the combination of a biodegradable polyester, polylactic acid (PLA), and hydroxyapatite (HA). Additionally, we report the effects of modifying these matrices through plasma polymerization of pyrrole on the growth and osteogenic differentiation of rabbit bone marrow stem cells. Cells were isolated, seeded and cultured on biomaterials for periods between 7 and 28 days. The matrices we obtained were formed by nano and microfibers containing up to 35.7 wt% HA, presenting a variety of apparent pore sizes to allow for the passage of nutrients to bone cells. Scanning electron microscopy showed that the fibers were coated with polypyrrole doped with iodine, and MTT assay demonstrated this increased cell proliferation and significantly improved cell viability due to the adhesive properties of the polymer. Our results show that PLA/HA/Pyrrole/Iodine matrices are favorable for bone tissue engineering.

CONFLICT OF INTEREST

We have no competing interest.

DATA AVAILABILITY STATEMENT

All data generated or analysed during this study are included in this published article or are available from the corresponding author on reasonable request.

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